Duct Seal Caulking, Putty, General Purpose Sealant 1 lb pkg
Duct Seal is a gray, permanently soft, non-toxic compound which will adhere to most clean dry surfaces. Has countless other applications in the refrigeration, heating and cooling, plumbing, and metal fabrication fields as well as being an excellent general purpose sealant. No irritation to eyes or skin

May be painted immediately after application and will not bleed through the dry paint.
Excellent resistance to water, alcohols, mild acids, and bases. Will not adversely affect other plastic materials or corrode metals. Sealer is used primarily by the building and specifically by the electrical trade to seal around electrical boxes, flashing's, and service mast entries, etc. Can be shaped by hand to any form and reused if necessary.
Retails around $5 for a 1 lb sealed tight package and never expires!
Take them for only $1 each minimum 50 package's at a time (1-Case)
Several Cases of 50 available
Great for electrical holes, painting, window repair
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If the ad is here there are at least 1 case left.